Water-tube blower.



J. MAGEE. WATER TUBE BLOWER.

PPLIoAToN RILED MAY 1e, 1912.

Patented May 6, 1913.v

3 SHEETS-SHEET 1.

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: J. MAGEE.

WATER TUBE BLOWER. APPLIoATIoN FILED inleg-T912.

1,060,923. Patented May 6, 1913.

WiTNEEJE v INVENTR /ff @Mag TTURNEYE J. M AGEE.

WATER TUBE BLOWER.

APPLIoATIoN FILED MAY 1s. 1912.

1,060,928. Patented May 6, 1913.

Fi qui o HH lNvEN-rnR m1555155 ATTnRNEYz:

UNITED STATES PATENT OEEIOE.,A

JOHN MaeEE, or DETROIT, MIcHIGAmAssIGNOE To DIAMOND POWER. SPECIALTYCOMPANY, OE DETROIT, MIOHIGAN, A. oOEPoEeTION OE MICHIGAN.

WATEBfTUiBE BLOWER. j

Specification i Letters Patent. Application led May 16, 1912. SerialNo.' 897,762.

Patented Mair-6, i913.

To all whom t may concern:

Be .it knownthat I, JOHN MAGEE, a subject of the King of England,residing at Detroit, in the county of Wayne and State of Michigan, have.invented new and useful Improvements in Water-Tube Blowers, of whichthe following is a specification.

Thisy invention relates to the class of blowers or cleaners employed forremoving soot chamber, so that they could be withdrawn therefrom whennot in use.` This construction is comparatively expensive and lessconvenient in use tha a blower permanently installed inthe com ustionchamber.

One of the objects of my invention is the provision of a blower of thistype which may be permanently installed in the oombustion chamber andywhich is at the same time provided with cooling means to protect itfrom the destructive action of the heat and lengthen its life.

A further object is to provide a blower which lwill reach practicallyall the boiler tubes and thoroughly clean them.

In the accompanying drawings consisting of 3 sheets: Figure l is afragmentary transdisposed blowervembodying the invention.

Fig. 2 is a longitudinal section, on an enlarged scale, of the front orouter portion of said blower. Fig. Bis asimilar section of the rear orAinner portion thereof. Fig.v 3a is a similar section of an.intermediate portion thereof. Figs. 4, 5, 6 and 6a are transversesections onv the correspondingly-numbered .lines in Fig. 2. Fig. 7 is afragmentary longitudinal section of a Babcock and Wilcox boiler equippedwith a longitudinallydisposed blower containing the invention, Fig.A 8is 'a longitudinal section, onnan enlarged scale, ,of the outer portionof Said blower. I Fig. y9 is 'a similar'section of its inner portion.Fig. 10 is a vertical section 'of a vertical-tube boiler equipped withthe kimproved blower.

Similar characters of reference indicate views.

Referring to Figs.' 1 6, 1v indicates the y walls of the boilersettingand 2-the water tubes communicating at their ends with the customary`headers 3 and -1.

. The blower comprisesa shell or casing 5 arranged on the outer side ofthe boiler setl ting and a jet or blower-tube 6 connected between whichis formed a steam inlet chame ber 10 with which is connected a steamsupply pipe 11 controlled by a valve 12.- The blower tube 6 Yis'arranged axially in the shell 5 and closely fitted in openings in thepartitions 8 and 9, the portion of said tube between the .partitionsbeing provided `with f one or more steam inlet openings 13communiseating with said chamber, while the outer end of said tube isclosedby a head or plug 14 bearing vagainst the outer side of thepartition v9 and preferably rotatable in the shell 5, The blower tube issecured to this plu'g by any suitable means, so as to turn therewith andthe plug is i-n turn rotated by a rotary disk 15 connected therewith bylontg-litudinal pins 16 preferably secured to .disk and entering socketsin 4Said plug. This disk has a stem- 17 extending through a stuffing box18 at the outer 'end of the shell and is providedat its projecting endwith a hand wheel 19, or other SuitablemeanS, for turning it. The disk15 is held in place in the' shell by the outer cap 20 o'if the shell,

ioo.

as shown in Fig. 2. A drip pipe 21 having a hand valve 22 is connectedwith the lower side of the steam inlet chamber -10 for carry'iing offthe water of condensation.

Surrounding the blower tube 6 1s a tube, hood or jacket 23 whichprotects kthe same from. the heat ofthe combustion chamber and alsoforms a part of the cooling means hereinafterl described. This jacket isprovided. with openings into or through which the jet nozzles or nipples7 extend. It is undesirable to subject these jet-nozzles to the strainof transmitting the turning move ment of the blower-tube to the jacket,and separate means of any suitable construction are therefore preferablyemployed for this purpose. The preferred devices illustrated in thedrawings consist of radial clamping screws 23a arranged in threadedopenings of the jacket and bearing against the outer side of theblower-tube, as shown in Fi s. 2 and 6a, thus relieving the jet nozzlesrom such turning strains. A single row of such 'screws located near theblower-inletV is shown in the drawings, but one or more additional lrows may obviously be employed at other points, if desired. The jacket23 is suitably supported in the wall of the boiler setting opposite thatnear which the shell 5 is arranged and its inner end is preferablyserrated, as shownat 24, to form a drill by which the jacket, on beingrotated by the hand wheel 19, bores its own supporting socket or groovein the adjacent wall 1. The jacket extends into the inner end of theshell 5 through a stufling box 25 and is suiiiciently larger in diameterthan the blower tube 6 to leave an intervening annular fpassage 26 for asuitable cooling agent, pre erably a liquid such as water. This passagecommunicates at its outer end with a water outlet chamber 27 formed. inthe shell on the inner side of the partition 8 and having a dischargepipe 28 leading to the drip pipe 21.

Arranged concentrically within the blower tube 6 and separated therefromby an intervening steam space or passage is a direct pipe or conduit 30lfor the water or other cooling agent. This pipe extends through theplug 14 and communicates with a water: inlet chamber 31 formed in theshell be* tween said plug and the disk 15. Leading to said chamber is avalved ,supply pipe 32. In the preferred construction shown in thedrawings, the direct water pipe 30 is removably screwed into the plug 14and clamped therein by a nut 33. The inner end of the blower tube 6 isclosed by a plug 34 through which the water pipe 30 passes, and saidwater pipe is closed at its inner end by a plug 35 lpreferably formedintegral .with a larger p ug or partition 36 which is arranged inthejacket 23vnear its serrated end.

The water pipe is removably supported in the plugs 14 and 34 and `uponthe plug 35. This construction permits the ready removal of the waterpipe for cleaning it, after removing the cap 20 and disk 15. Between theplugs 34 and 36 the direct water pipe or passage 30 is provided with anumber of openings 37 through which the' water es- Leccese thejet-nozzles 7, the blower tube is preferably provided with one ormoresuitable expansion joints, particularly in comparatively longblowers. Ordinarily one such joint located laboutsiX feet from the lirstnozzle nearest th'e blower-inlet is suii'icient.

In the preferred construction shown in Fig. 3a of the drawings, theexpansion joint consists of a tight slip joint 6a formed by making theblower tube in sections which are telescoped. j

It will be understood from the foregoing that upon opening the valve 12,steam is admitted to the inlet chamber 10 of the shell whence it passesthrough the openings 13 into and through the blower tube and thenceissues through the several jet nozzles 7 against and among the watertubes of the boiler. These nozzles are preferably arranged at suit-ableintervals on one side of the blower tube, to concentrate the Steam jetsupon the boiler-tubes, and by rotating the blower-tube, as beforedescribed, all portions of the boiler tubes are subjected to the actionof the blower and thoroughly cleaned. A single blower is shown in lthedrawings, but in practice two or more may be installed at properelevations or intervals to lreach and thoroughly clean all of theboiler-tubes.4

While the blower is not in use, water or othercooling agent is caused tocirculate' around the blower or blower-tube 6 by opening the .valves ofthe water supply pipe 32 and the discharge pipe 28. The water enteringthe inlet chamber 31 passes through the direct pipe or passage 30,andthe openings 37 -into the surrounding jacket 23,

whence it returns through the passage 26v into the outlet chamber 27from which it is discharged through the pipe 28 into the dri pipe 21.

y maintaining a circulation of water or other suitable cooling agentthrough oraround the blower tube, or both, as shown in the drawings, thesame is no more liable to burn out than the water tubes ofthe boilerwhich have a similar circulation, thus materially prolonging its life.This cooling provision makes it practicable to permanently install theblower .in the combustion Achamber among the boiler tubes, rendering,J

the blower more convenient in use by avoiding the necessity ofwithdrawing it from! the combustion chamber andalso materially reducingthe cost of manufacturing and installing theblower. At the same time theapparatus in no way interferes with the draft.

The water supply pipe 32 and the water discharge pipe 28 of the blowerpreferably` have no connection with the water spaceof u sediment in thewater, 'which would be liable to occur if hot water from the boiler weresupplied to the water jacket of the blower.

described the steam and the cooling agent Vare both supplied to theblower and discharged therefrom at the same side of the boiler. Such areturn type of blower is designed more particularly. for use inconnection with boilers arranged side by side in a, `battery orbatteries, where the shell 5 and pipe connections can be installed onlyat the outer or accessible'wall of the boiler setting.

In cases where it is practicable or preferable to providethe blower withsupply connections for the steam and the cooling agent at one end andwith ldischarge connec- 'tions at the opposite end, a blower vof themodified construction shown in Figs. 7, 8 and 9 may be employed. In Fig.7 such a blower is shown as applied to a Babcock & Wilcox boiler, theblower being arranged lengthwise of the boiler and replacing one of thetubes. In practice, one' or more blowers are thus disposed at suitablepoints to reach and clean all of the tubes; for example, the two tubesmarked 2a in Fig. 1, may be replaced by such longitudinal blowers.Referring to this modification of the invention, the central water inletpipe 30 of the first described construction is omitted andthe jacket orprotecting tube 38 of' the blower-tube 39 extends through suitablestufling boxes or fittings .in the headers 3 and 4, and its upper endpasses through a stuiing box 40 into an inlet chamber 41 for the wateror other cooling agent formed in the adjacent portion of the shell 42,said chamber having a supply connection 43. As in the first-describedconstruction, the blower tube 39 is arranged concentrically within the jacket38 and separated therefrom by awater passage '44 extendingthroughout its A length. This passage communicates at its Y rear endwith a suitable, connection 45 applied to the rear end of the jacket andleading to the discharge pipe 46. The blower tube andjacket areconnected by the jet nozzles 47 and screws 23?, as in the constructionfirst described. Likewise the outer end of the blower pipe is arrangedin the steam incular flange 52 rotatably seated between an internalshoulder 53' of the `shell and a nut s wheel 50 'indi-v 54.Connectedfwith the outer end of this head is the stem or spindle '55 ofthe hand 56 by ywhich the blower is turned.` The ste-m 55 is preferablydisposed horizontally'and inasmuch as the blower tube follows theinclination of the boilertubes, it is necessary to provide a universaljoint 57 of any suitable construction bet/Ween the stem j and said head.It will be noted that in the blower just-i `As shown in Fig. 9, the rearend of the blower tube is closed by a plug 58.

In the use of this blower which may be termed the direct type, the steamentering through the inlet connection 50 `passes through the openings 49into the'blower tube 39 and escapes through the jet nozzlesl 47,cleaning the boiler tubes. lThe water or other cooling agent admittedthrough the inlet connection 43 enters the chamber 41 l and passesthrough the space yor passageBS between the blowertube.39 andthe jacketupper portion of its combustion chamber with a direct blower 59, similarto that shown in Figs. 7-9, and in its lower portion witha return blower60, similar to that shown in Figs. 1-6. In this case, both blowersextend transversely of the'combustion chamber andamong the boiler tubes.

Other changes or modilications may obviously be made within the scope ofthe appended claims, and I do not therefore wish to be limited to theparticular constructions herein shown and described.

I' claim as my invention: e i

l. In a boiler, the combination with the combustion lchamber and theboiler-tubes, of a soot-blower arranged in said chamber adjacent to theboiler-tubes to remove the soot therefrom, and means for supplying acooling liquid to the blower.

2. In al boiler, the combination with the combustion ,chamber 'and theboiler-tubes, of a soot-blower arranged in said chamber adjacent to t-heboiler-tubes to remove the soot therefrom, a 'jacket inclosing theblower, and means for supplying a cooling agent to said jacket.

3. The combination with the boiler setting, the combustion chamberandthe boilertubes, of a soot blower comprising a casin arranged on theouter side of the setting an having separate inlet chambers for steamand a cooling agent, a blower tube permanently arranged in thecombustion chamber adjacent to the boiler-tubes to remove the sootltherefrom, said blower-tube being connected with said steam inletchamber, and a cooling conduit associated with said blowertube andconnected with said cooling-agent chamber.

5. In a boiler, the combination with the combustion'chamber and theboiler-tubes, of a soot-blower arranged in said chamber adjacent to theboiler-tubes to remove the soottherefrom, and cooling means associatedwith said blower .and independent of and disconnected from the waterspace of the boiler.

'6. In a boiler, the combination with the combustion chamber and theboiler tubes, of a soot-blower arranged in said chamber adjacent to theboiler tubes to remove the soot therefrom, a jacket inclosing theblower, and means for supplying a cooling agent to said jacketdisconnected from the waterspace of the boiler.

7. A soot-blower comprising a casing having separate inlets for steamand a cooling agent, a blower-tube connected with said steam inlet, anda cooling-conduit adjacent to the blower-tube and connected with saidcooling-agent inlet.

8. A soot-blower comprising a casing having separate inlets for steamand a cooling agent, a blower-tube connected with said steam inlet, anda cooling jacket surrounding the blower tube and connected with said letfor a cooling agent, a blower-tube comcooling-agent inlet.

9. A soot-blower comprising a blowertube, a protecting jacketsurrounding said tube and provided at its inner end with boring meansadapted to penetrate the boiler sett-ing, and means for rot-ating saidjacket.

10. A blower comprising a casing having a steam inletchainber, ablower-tube communicating with said chamber, a protecting jacketsurrounding the blower tube and provided at its inner end with borinmeans adapted to penetrate the boiler-setting, and means for rotatingsaid jacket.

11. A blower comprising a casing having a steam inlet chamber, ablowertube coinmunicating with said chamber and rotatable in saidcasing, means for rotating the blower tube, a protecting ljacketsurrounding the blower tube and provided at its inner end with boring4serrations, and means connecting the jacket with the blower-tube tocompel it to turn therewith.

12. A lsoot-blower, comprising a casing having a steam inlet and aninlet and an outweones municating with said steam inlet, and direct andret-urn conduits forthe cooling agent arranged adjacent to the blowertube and respectively connected with `said secondnamed inlet and saidoutlet.

13. A soot-blower, comprising ,a casing having a steam inlet and aninlet and an out-` let for a coolingagent, a blower-tube communicatingwith said steam inlet, a direct conduit for the cooling agent arrangedwithin the blower-tube and communicating with said second-named inlet,and a return conduit for the cooling agent surrounding the blower-tubeand communicating with said outlet. Y

14. A soot-blower comprising a casing having a steam inlet chamber, aninlet chamber for a cooling agent and an outlet for said agent, a blowertube extending into said casing and communicating with said steam lapipe arranged within the blower-tube ,and

communicating at its receiving end with said second-named inlet chamber,the opposite end of the pi e extending through the closed end of theblower-tube and having a discharge opening in its projecting portion,and a cooling jacket surrounding said blower-tube and closed at itsinner end, said inner portion of the4 jacket communicating with theprojecting portion of said pipeand the opposite end of the jacketcoinmunicating with said outlet. l

16. A blower, comprising a Icasing having a steam inlet chamber, aninlet chamber Jfor a cooling agent and an outlet for said agent. ablower-tube extending into said casing and rotatably arranged therein,said tube communicati-ng with said steam inlet chamber. a rotary plugsecured to the iront end of the blower-tube, rotary operating meansconnected with said plug and extending outside `with said second-namedinlet chamber and at its delivery end with said jacket.

17. A blower comprising a casing having a steam inlet chamber, an inletchamber for a cooling agent and an outlet for said agent,

a blower-tube extending into said casing and rotatably arranged therein,said tube communicating with said steam inlet chamber, a rotary plugsecured to the front end of the blower-tube, a rotary disk arranged insaid second-named inlet chamber and spaced from said plug, pinsconnecting said disk with said plug, means for rotating said diskextending outside of said casing, a cooling jacket surrounding saidblower-tube and communicating with said outlet, and a pipe arrangedlengthwise within the blower-tube and connecting said second-named inletchamber with said jacket.

18. A blower, comprising a casing havingl a steam inlet chamber, aninlet chamber for a cooling agent. and an outlet for said agent, ablower tube communicating with said steaminlet chamber, a plug closingthe front end of said tube, a cooling jacket surrounding the blower tubeand communicating with said outlet, and a pipe arranged within theblower tube and removably secured in said plug, said pipe communicatingat its receiv- 25- ing end with said second-named inlet chamber and atits opposite end with said jacket. 19. A blower, comprising a casinghaving a. steam inlet chamber, an inlet chamber for a cooling agent andan outlet for said agent,A

a blower tube arranged in said casing and communicatingwith said steaminlet chamber, plugs closing the front and rear end' of said tube, acooling jacket surrounding the` blower tube and communicating with saidoutlet, a water pipe disposed lengthwise in the blower-tube andremovably supported in said plugs, said pipe communicating at itsreceiving end with said second-named inlet chamber and at its oppositeend with said jacket, and a plug closing the rear portions of saidjacketand said removable pipe.

20. A blower comprising a casing having separate inlets for steam and acooling agent a blower tube communicating with sai steam inlet andhaving jet nozzles, a cooling jacket surrounding the blower tubecommunicating with said cooling-agent inlet' and having openings throughwhich said jet nozzles pass, and. means independent of said i nozzlesfor connecting the jacket with the blower tube.

21. A blower comprising a casing havingseparate inlets for steam and acooling agent a blower tube communicating with sai' steam inletandhaving jet nozzles, means for rotating the blower-tube, a coolingjacket surrounding the blower tube, communicating with saidcooling-agent inlet andy having openings through which said jet-nozzlespass, and means independent of said nozzles for transmitting the rotarymovement j of the blower-tube to said jacket.

22. A blower comprising a casing having separate inlets for steam and acooling agent. a blower tube communicatingl with said steam inlet andhaving jet nozzles, means.

for rotating the blower-tube, a cooling jacket surrounding the blowertube, communicating with said cooling-agent inlet and having openingsthrough which said jet nozzles pass, and connecting screws carried bythe jacket and engaging the` blower-tube.

23. A blower comprising a casing having separate inlets for steam and acooling agent, a blower tube containing one or more eX- pansion joints,said tube communicating with said steam inlet and having jet-nozzles, A

hand thisllth day of May,

Jon-N MAGEE.

Witnesses HARRY A. HIGGINS, EVELYN HEADRIDGE.

